To judge New York Fashion Week by the lineup at Thursday night's Fashion Rocks concert, you'd think the mismatched look was in.

Fergie sang with Aerosmith, Teri Hatcher shared the stage with 50 Cent to introduce Jennifer Lopez, and Jeremy Piven served as host to a crowd of style insiders. From the start, Piven wondered aloud why he was there — were possible emcees Tom Ford, Kanye West or Heidi Klum all unavailable?

Yes, Piven answered, and that left him to do the job. He was more than serviceable.

Update: Watch Mary J Blige & Usher, Jennifer Hudson, Aerosmith & Fergie, Jennifer Lopez, Alicia Keys, Alicia Keys & Santana


Continue reading for red carpet goodness, picture from the show, and the after party!